Aiming at the problem of poor service performance of common emulsified asphalt interlayer bonding materials, the interlayer shear resistance of a modified emulsified asphalt with high viscosity developed independently and three kinds of adhesive layer materials commonly used in engineering are compared and analyzed. The results show that the independently researched and developed high-viscosity modified emulsified asphalt has higher shear strength and its shear fatigue life is greater than the other emulsified asphalts obviously, which is an excellent interlayer bonding material.